Barbarian
Member
- Jun 5, 2003
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Now I realize that the status quo mantra says that chimps and humans started out with exactly the same chromosomes.
Not even two chimps have exactly the same chromosomes. There are always differences. No two humans have exactly the same chromosomes. So no.
Then, about 5 million years ago, the two started to drift apart in evolution. And that EITHER the two in chimps could have fused, or been one and then split,
Actually, no. The presence of the telomere and centromere remnants from the fusion would not be present if that were the case. And of course, it wasn't from chimps, but from the common ancestor of humans and chimps, which probably looked a lot more humanlike than the rather evolved chimpanzee.
but we do not have actual evidence of any drifting just the constructed narrative.
You've been misled there, too:
Different regions of the human and chimp genomes were found to have diverged at widely different times, and the two species' X chromosomes show a surprisingly recent divergence time.
This genetic evidence boosts the theory that the two species may have hybridized, because interbreeding causes strong selective pressure on the X chromosome and could have resulted in that chromosome's very young age in both humans and chimpanzees.
http://news.nationalgeographic.com/news/2006/05/humans-chimps_2.html
How do we prove this to be the case?
We need to sequence more primate DNA to see how this sorts out. That's on the way.
Since what we can know shows that the Y chromosome I inherited from my father is the same as his, and his was the same as his father’s, then logic demands this had carried on as far back as we go. The same is true for the chimpanzees. Since this is true, IMO it is more likely that the two were as separate then as they are now.
See above. The genetic data indicates that the split wasn't quick, and hybridization happened over a period of time, until the fusion event, at least.
If the chromosomal genome was identical between pre-chimp and modern chimp I can only surmise they were the same exact creature
As you see, that can only be true of identical twins. So, no.